258 citations · 1k across the 13 of their papers we have counts for
7 papers · 1 filter
A Catalog of Diffuse Interstellar Bands in the Spectrum of HD 204827
L. M. Hobbs, D. G. York, T. P. Snow +8
Echelle spectra of the double-lined spectroscopic binary HD 204827 were obtained on five nights, at a resolving power R = 38,000 and with a S/N ratio = 750 near 6000 A in the final…
Oxygen from the Lambda 7774 High-Excitation Triplet in Open Cluster Dwarfs: Hyades
Simon C. Schuler, Jeremy R. King, Donald M. Terndrup +3
Oxygen abundances have been derived from the near-IR, high-excitation Lambda 7774 O I triplet in high-resolution, high signal-to-noise spectra of 45 Hyades dwarfs using standard on…
High-Resolution Observations of Interstellar Ca I Absorption -- Implications for Depletions and Electron Densities in Diffuse Clouds
Daniel E. Welty, L. M. Hobbs, Donald C. Morton
We present high-resolution (FWHM ~ 0.3-1.5 km/s) spectra of interstellar Ca I absorption toward 30 Galactic stars. Comparisons of the column densities of Ca I, Ca II, K I, and othe…
Unusually Weak Diffuse Interstellar Bands toward HD 62542
T. P. Snow, D. E. Welty, J. Thorburn +4
As part of an extensive survey of diffuse interstellar bands (DIBs), we have obtained optical spectra of the moderately reddened B5V star HD 62542, which is known to have an unusua…
Possible spectral lines from the gaseous Beta Pictoris disk
A. Lecavelier des Etangs, L. M. Hobbs, A. Vidal-Madjar +6
We present the results of exploratory HST observations to detect the emission lines of ions in the Beta Pic disk with the spectrograph slit placed off the star. Possible emission l…
The Diffuse Interstellar Clouds toward 23 Orionis
D. E. Welty, L. M. Hobbs, J. T. Lauroesch +3
Spectra obtained with the Hubble Space Telescope GHRS are combined with high-resolution optical spectra and UV spectra from Copernicus to study the abundances and physical conditio…